六流连铸中间包等离子加热过程的数值模拟

NUMERICAL SIMULATION OF THE PLASMA HEATING PROCESS IN A SIX-STRAND TUNDISH

在流动与传热耦合计算的基础上，对宝山钢铁股份有限公司六流连铸中间包等离子加热区域底部吹气与来吹气情况下等离子加热模拟结果进行了分析．结果表明，在未吹气情况下，加热区域上部钢液温度很高，对中间包耐火材料（尤其对包盖的耐火材料）影响很大．采用底吹气时此问题可基本得到解决．

On the basis of coupled flow and heat transfer calculation, the plasma heating simulating results of argon-blowing on the bottom of heating area and non-argon-blowing in the six-strand tundish were analyzed respectively. The result shows that the temperature of the upper part of liquid steel in the heating area is very high in the case of non-argon-blowing, which will result in the exfoliation of the refractory, especially the refractory on the tundish cover. This shortcoming can be avoided if the tundish with plasma heating was blown from bottom.